Sensitization type fiber bragg grating hollow inclusion stress meter

The invention provides a sensibilization type fiber bragg grating hollow inclusion stress meter. The sensibilization type fiber bragg grating hollow inclusion stress meter comprises a front rod body, a middle rod body and a tail rod body, a first cavity is formed in one end of the middle rod body, an adapter rod is arranged at the other end of the middle rod body, the other end of the middle rod body is connected with the tail rod body through the adapter rod, and the outer wall of the adapter rod is sleeved with a first sealing ring; a second cavity is formed in one end of the front rod body, the end is inserted into the first cavity and connected with the middle rod body through a first inserting rod, the outer wall of the other end of the front rod body is sleeved with a second sealing ring, at least one object discharging hole is formed in the wall face of the second cavity, and a first strain sensor is arranged on the first inserting rod. A second strain sensor is arranged in the first cavity, and a stra